ProfilePictureValidator.java

/**
 * This file is part of Faktotum.
 *
 *
 *  Faktotum is free software: you can redistribute it and/or 
 *  modify it under the terms of the GNU Lesser General Public License 
 *  as published by the Free Software Foundation, either version 3 of 
 *  the License, or (at your option) any later version.
 *
 *  Faktotum is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public 
 *  License along with Faktotum.  
 *
 *  If not, see <http://www.gnu.org/licenses/>.
 */
package de.romankreisel.faktotum.helper;

import java.util.ArrayList;
import java.util.List;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.validator.FacesValidator;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;
import javax.servlet.http.Part;

/**
 * @author roman
 * 
 */
@FacesValidator(value = "profilePictureValidator")
public class ProfilePictureValidator implements Validator {

	/*
	 * (non-Javadoc)
	 * 
	 * @see
	 * javax.faces.validator.Validator#validate(javax.faces.context.FacesContext
	 * , javax.faces.component.UIComponent, java.lang.Object)
	 */
	@Override
	public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException {
		List<FacesMessage> msgs = new ArrayList<FacesMessage>();
		Part file = (Part) value;
		// max 10mbyte - more than enough!
		// TODO: configurable
		if (file.getSize() > 1024 * 1024 * 10) {
			msgs.add(new FacesMessage("The uploaded file exceeds the maximum filesize"));
		}
		// TODO: more file types
		if (!"image/jpeg".equals(file.getContentType())) {
			msgs.add(new FacesMessage("Only JPG-Files are allowed"));
		}
		if (!msgs.isEmpty()) {
			throw new ValidatorException(msgs);
		}
	}

}